or not
Have you seen them or not?
Sta a te decidere se là ci andiamo oppure no.
It's up to you to decide whether we go there or not.
Mangiare faceva parte di quella messinscena, che avessi fame oppure no.
Eating was part of that charade, whether I was hungry or not.
Non so se dovrei andare oppure no.
I don't know whether I should go or not.
Come fai a sapere se le ha uccise oppure no?
How do you know if he killed them or not?
— The Chaser (2008)